Synergistic effect of catalyst basicity and reducibility on performance of ternary CeO 2-based catalyst for CO 2 OCM to C 2 hydrocarbons

Abstract

The present investigation focuses on the synergistic effect of catalyst basicity and reducibility on the catalytic activity of binary and ternary CeO 2-based catalysts in the CO 2 oxidative coupling of methane (CO 2 OCM). Proper amount of medium and strong basic sites together with lower amount of very strong basic sites are identified as pertinent factors in increasing the catalytic performance. The CO 2-TPD and H 2-TPR studies indicate synergistic effect between the catalyst basicity and reducibility for the 12.8CaO–6.4MnO/CeO 2 ternary metal-oxide catalyst in enhancing the CO 2 OCM performance.